1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb02ae32daf07cd63f694f6a8de54a8b1a8214b968d61806ee0a7ada6a5772e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4af6986a-5f11-4421-ab1c-7cc19b2592a0.json and https://artists.proofprofile.net/proofs/artist/4af6986a-5f11-4421-ab1c-7cc19b2592a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8501a881d101be64e4749ab812aed339884357af394192dccfc9887e1e1c80d8. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2520669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fbcfb3aaf4e998d4b869d0e76f31de5c48ceab2963d868e1312f1e4b57623d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2520670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5a257434e226379c49f175c70d2da22a234945f3d1af6b15284438e9d49dd2. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2520672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5541a94980f1f8674264da0c983df574eb3a23fb8969bcc0df5c7132bff037. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2520673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ce25662fa8ab19c17833007a7be37ab007fc39dfe64baed66d82f5f64f87e0. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2520674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf4ceb798b78bcd44da626d9ac80d896f7b45d94e561cba3347e20bf0830136. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2520675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8d6e2fa08d343be93b0858999716ad0813f03afeddbc301fe0c2bfcbe4fe7d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2520677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41cd1efb5f246443ab0eba744f76b3168d7e5dfdad11cef9291dbd1b97ae1ea. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2520678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f75dc64086b65d3d531e08afa579c2d42eb59670f03be001441e612a740b4c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2552065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ad91a056d44a6ec7352f8c649d8fca9b4ebc079bc6999a0a2d0f9d12631672. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2552066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d14f97cc7413697c7d9363ff4b2801fbe659697f2b89fd10366634b329f2be2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2552067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdab0f26ea5bbd24027c466681c7af165e68b8e6dc989433ffdb7bb5aef16931. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2552068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba0748d95839d1188de90cee9b438abda9310430c29955f46f377db935efb31. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2552069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f413cac4cff3112f87e363da2042c3c61827cb2a3556b405a2afe2604b1b36. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2552070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd22c94362d303c59cbdfd36c680a045c9f61e2c619f59826cba1e367fa3cbf. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2552071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d3bf655661c4d7e5d9e8e71169c65dfcf971350450a959f635a98046c270d5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2552072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bb446f20a070c1ae8ff2b13f984283bf45732c178f7fea453b372974010541. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2552073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8f57cfa849ffdd298f5da0e86b9601c61463be9478c5e3ba868990a6e51757. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:18:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2552074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b9d6cb9c24275f7d1612159d0bd5a67ac0b00ae60db2fa10086bdcf96e8635. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:48:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHND2531551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc631308624a2ea11e78751a5570fc453fe78cb0c83e54102b9e1c4d49893f83. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXHND2544456.